My metauniverse is called "Milegu". In Milegu all can exist, doesn't matter if is impossible or not. Due impossible things happenings there are an incredible number of paradoxes. Milegu (as a metauniverse) is above infinite in its size so can't have a center. But, due to paradoxes, it have a center. If you have read Neverending Story, you find that the concept is almost equal with the Marble Tower in those books.

In the Center of Milegu (the Center of All) there are cosmological structures of inmense size such as the Figure most perfect of All and others.

Obviously, there are different Milegu overlapping each other, so these structures are only in a "few" of them (although the number of them is still infinite).

From those structures comes a lot of related concepts of my metauniverse

Sorry for the long comment. Thanks for comment, for the favs and for looking my works!